1329478379 has 4 divisors (see below), whose sum is σ = 1330898184. Its totient is φ = 1328058576.

The previous prime is 1329478373. The next prime is 1329478433. The reversal of 1329478379 is 9738749231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1329478379 - 2⁴ = 1329478363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1329478379.

It is not an unprimeable number, because it can be changed into a prime (1329478373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708497 + ... + 710370.

It is an arithmetic number, because the mean of its divisors is an integer number (332724546).

Almost surely, 2^1329478379 is an apocalyptic number.

1329478379 is a deficient number, since it is larger than the sum of its proper divisors (1419805).

1329478379 is an equidigital number, since it uses as much as digits as its factorization.

1329478379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419804.

The product of its digits is 2286144, while the sum is 53.

The square root of 1329478379 is about 36462.0128215654. The cubic root of 1329478379 is about 1099.5806608221.

The spelling of 1329478379 in words is "one billion, three hundred twenty-nine million, four hundred seventy-eight thousand, three hundred seventy-nine".